Question about 1998 Cadillac DeVille

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How to add coolant if comp. shuts down automatically

The compressor shuts down automatically now that the fluid has run out. I was under the impression that the compressor needs to be running to accept the new coolant. How do I kkep it running long enough to refill it?

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The system should still take the freon in even if the compressor is not running it is ture it takes it faster with the compressor running but should still take it and when theres enough freon to close the low preasure switch the compressor will turn on unless there are other problems. if you would like to turn on compressor to charge faster just locate cycling switch on passengerside on the dryer, this is the aluiminum can unplug the connector from the switch and jump the connection on the plug with ac on the compressor will turn on if it does not then there are other problems with the system.

Posted on Jul 10, 2010

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You should just keep adding the refigerant the pressure in the lines will close the low pressure switch which will be taken over by the system as charge is increased. Two cans should be plenty. DO NOT use a leak seal more than once as you'll increase the risk of compressor and other expensive component failure.

Posted on Jul 10, 2010

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